EMPLOYEE BENEFIT PLANS - Pension Plan Assets by Asset Category (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	$ 304.1	$ 271.5
United States | Defined Benefit Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	34.3	31.9	$ 37.4
United States | Defined Benefit Pension Plans | Equity security funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	16.4	13.2
United States | Defined Benefit Pension Plans | Debt security funds and other
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	16.3	17.5
United States | Defined Benefit Pension Plans | Cash and cash equivalents
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	1.6	1.2
Foreign Plan | Defined Benefit Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	269.8	239.4	$ 281.6
Foreign Plan | Defined Benefit Pension Plans | Equity security funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	70.8	95.1
Foreign Plan | Defined Benefit Pension Plans | Debt security funds and other
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	191.3	140.9
Foreign Plan | Defined Benefit Pension Plans | Cash and cash equivalents
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	$ 7.7	$ 3.4